Knife-blade-squaring machine



ug. `5 1924. Y

" E. J. CONKLIN KNIFE BLADE SQUARING MACHINE File@ Jan. 1.9.

Aug. 5 1924,.

E. J. CONKLIN KNIFE BLADE SQUARING MACHINE Filed dan. 19 1923 4 Sheets-Sheet 2 Aug. 5. 1924.` 1503i@ E. J. CONKLIN KNIFE BLADE SQUARING 'MACHINE 4 vrSheets-Sheet 5 Filed dan. 19 1923 "awww )uw E. J. CONKLN KNIFE f BLADE SQUARING MACHINE Filed dan. 19, 1923 4 Sheets-Sheet LI A "i INVENTOR ATTORN EY Patented Aug. 5, 1924.

ijwiinn J". oon'iiilfit, loirnnninion'r, eonniioironr.

KnIrn-Bnann-snunnine rinonmn.

Application ined- :ramal-y19; 192e: serial- Ne. massa.

citizen-of the United` Sta-tes, fandresident of ri'dgeport, in the county of Fairfield and"- State vof Connecticut, has invented eertainv newY and useful Improvements in Knife- BladeSquaring lVfachines, of which the vfollowing is a specification- This invention relates 'to new and useful im'girovements inwknife blade ys'cfl-lalring mal chi-nes, particularly to machine -forsquaringgby grinding, the tangs of pocket knife b'lades.- Y c v is the pur-pose ofJ the 'invention teV iinprqve--upon machines of this class by-del signin-g1r a machinesljwhereby knife blade tangs may be squaredvery much morera-pidly-thanv can bef-donenow on other ma"` clii'nes for this pi1rpose,ancl-especially to provide a machine wherein the several opA` I erations 'may' be performed with onesettingoftlieblade on. the m-aehine. it ifs also -an object .to provide a. machine wherebyaccuracyvand uniformity of operations and pror'dufetion willgbegassured, and further to so design the machine, that the grinding Wheels` may .be quickly adjust-ed toperform the ;re

quired? operations upon knife blades, having different forms of tang-sand t0- previdemeans for feedingv the blade to `be ground',

with relation to the grinding wheels so that the lifeof the wheelsisprolonged, and' aecuracy in grinding assured;A

The inventiony furthervcomprises asma-- chine whichi'nclud'es three grindingwheels so positionedand spaced with relation te eacli.- other, that: almovable knife blade sup1 porting table mapv be` quickly moved Afrom enewlieel@ to the other, to perform the separate operationsvby La Acontinuous movementof the table` andv blade, thereby avoiding returnan-d other false movements, and tofin,v

sure a saving of time in the performance of the work. ln' this connectionllhave `also 1ncludedan adjustable setting device whereby" the different operations. required for grindingI the tangs on different styles and` sizes' of ,bladesv may be readily provided. The machine is fur-ther constructed so that any`V one. or'two of" the grindingwheels may beV used without the secondv or third as might be `desired in the `manufacture of bladesy where one or two edges only of the tang"v are required to beg-round. Y t lith these and other objects in view the as seen in Fig, 1;.,..

invention resides and consists -in the -eonstruction and novel ycombination yand Varrangferrient ofpafrts hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claimsv hereto appended, it beingA understood that various changes in the,l form, proportion,

size and kminor ldetails of construction' withinthe seop'e of1 the Iclaims may be resorted to without departure `from the spirit or sacriiicingany of the advantages of the inventina* i A Similar v characters of reference denote table ;V I

Fig?.A 'shows a plan view of the machine Fig. gli is a detail-plan of bed of machine, loro'kenaway, showing opening-therein for movable pedestal carrying Vwork table;

Figi- 5 is afsectional elevation taken on line 5 5 of Fig. 3, illustrating the movable pedestal fand its work table, in an operative position;-l f

61isanfendfelevation, as seen from the right'fof. Fig. 3; and Y Eigs;l 7, 8' and -9 `show enlarged diagrammaticlalviews illustrating the manner of grinding theseveral edges of a knife tang. lin designing the. machine shown inthe accompanying drawins I have provided l separat-e motors-for driving the three separate grinding Wheels, though it will be obvious, of! course, that these wheels may be belt-driven, and connected to be operated in anyw-'ellVv known or preferred manner, and whereby ydifferent speeds and independent controlof the wheel'sm-ay be obtained.

Referring in detail to the characters of reference marked' upon the drawing, 1'() represents the bed of' thevmachine which is designed to be formed of a single casting, andigis supported upon four legs 11 of suffi'- 'cient'lieight to position the bed and working portionsofthe machine at a suitable height for the attending operator, when seated on a stool adjacent thereto. The bed is pro- CII parallel,

vided with an angular opening 12 in its front edge, intermediate of the two front legs, to accommodate a movable pedestal forl work table 13 upon which the knife blades are carried as will be later again referred to.

14, 15 and 16 represent grinding wheels, which are mounted upon spindles of separate motors designated as 17, 18 and 19. These wheels are substantially alike in construction, each having a bevel edge against which the several edges of the knife tangs are positioned for grinding. Two of the wheels, 14 and 16, are positioned and are suitably spaced with relation to each other so that the remaining grinding wheel 15 will be slightly to the rear of the iiist mentioned grinding wheels 14 and 16. The rear grinding wheel is arranged at aright angle to the position of the other two wheels, and is so positioned that its edge will be intermediate of the other two wheels, thus making it possible to first feed the blade A against the wheel 14 for the first operation see Figs. 1 and 7, then by a continuous movement, feed it to th-e second wheel 15 for the second operation c, see Fig. 8, and finally to draw it over the edge of the third wheel 16 for the finishing operation d, see Fig. 9.

The. motor frames are respectively secured` upon bases 17a, 18a, and 19a that in turn are adjustably supported on the bed 10. Fach of these base members is adapted to be adjusted to and from the movable table supporting pedestal. The two wheels 1.4 and 16 are also adapted to be adjusted forward and backward and at right angles to the aforementioned adjustment, as will be explained.

By this means it will be obvious that each of the wheels may be adjusted edgewise to properly position its cutting edge, and that the wheels 14 and 16 only require to be adjusted backward and forward to assume anyl required positionwith relation to each other. Two of these base members 17a and 19a are substantially alike in construction, see Figs. 1 and 6, and include ways 21 in vtheir underside to accommodate correspondingl ways 22 in slides 23. These slides 23 are provided 'with longitudinal ways 24 arranged at a right angle to the ways 22 before mentioned, that fit and ride upon ways .25 on the bed. These two base members 17a and 19a are provided with depending lugs 26 that are engaged by adjust-ing screws 27,'made to turn in the slides 23, so as to move the base and motor to and fro in a way to adjust the motor and its grinding wheel sidewise. The slides 23 of the base membe-rs 17 and 19l and also theslide 23 of the base member 18a, each include a depending lug '29 that is engaged by an adjusting screw 30 mounted in the bed in machine.

a Vmannerto provide a backward and forward adjustment tothe slide motors and their grinding wheel.

Thework carrying table 13 before mentioned, upon which the knife blade` A is positioned for its grinding operations, see Y Fig. 3, is provided with a small upwardly projecting pin 31 `to enter the hole a in the tang B of the blade, for the purpose of positioning and holding it while being edges b, o and CZ of the tang of a knife blade,'

when mounted upon the table, to be successively fed to thev respective grinding wheels, guided by the edges of the opening 12 in the bed of the machine.

This table is carriedupon the upper end of an arm 33 of a pedestal 34 carried by a cradle 35 which is mounted in a U-shaped.

hanger 36 secured to vthe underside of the bed and directly beneath the opening 12 in the bed. The lower end portion of the cradle member 35 is provided with aligned sockets 28 and 37 that are engaged by the Thus it will be seen that the f pointed ends of pivotal screws 38 mounted in a yoke 39. The side portions of the yoke are also provided with sockets 40 engaged by aligned pivotal screws 41 seated in the opposite side portions of the beforementioned yoke 39. On the upper end of this cradle 35 is provided a roll 42 which in practice engages the guide plates 43, 44 and 45 secured to the top of the bed of the machine, adjacent to 'the inner edges of the before mentioned opening 12 formed in the bed. These guide plates serve to'limit and guide the movement of the table with reference to the ,cutting edges of the wheels, as

the table is moved by the operator within the opening 12 formed in the bed. VThe guiding edge of the plate 44 is cut Vaway slightly as at 46 to permit the roll 42 and table' to move forward slightly, as is necessary to feed the back d of the tang, in close to the'edge of the wheel 16 to slightly undercut the shoulder e, as shown in Fig. 9, in its finishing operation, preparatory to being withdrawn, VA cord or chainl 2O is used to retain the table'and pedestal within limits and prevent it from falling away fromthe One end of the cord is secured tothe bed of the machine and the other end to the cradle as shown in Fig. 5. 4

The cradle member 35 is Vprovided with -oppositely disposed flanges: 47---47V which serve asstops against which portions of'the being' Provided with sockets 49` to receive the pointed ends of pivotalv screwsjO, the,

lowerl one of said screws being positioned, in the before mentioned yoke-'39- and the upper one beingpositioned in the upper end of the pedestal 34central' of the before mentioned roll: 42.- The: arm 33 whiclris,

formedl integral with pedestal .34 extends.

forwardand upward from the pedestal and: is providedin its upper end@ with socket.

to receive aw shank- 52 of the table, said shank being adjustably secured; thereinl by means of a set screw 53 (Fig-sA 5'); It will thus be seen that. the cradlesissupported inV the hanger, sothat it may bemovable` backwardj and forwardjjan'di sidewise, 'andr'that the table carried-thereby is.; providedfwith^ all the required movements forI the".grinding.1v of the blade when carriedthereon; I have also provided adjustable lmeansffor, setting the position off the. pedestal and: table with,

relation to the2 cradlel member 35,'A which means comprises two arms 54; upon, opposite `sides of the pedestal and providedwith screws 55 in each, whichjscrews abut against the flanges 4f? before mentioned= so. thatl the same may be'made ri'id with relation thereto, and also provide or aslight'finde- 1 pendent movement according tothe pos-ibe raised.

Cil

tioning of thescrewsforV the purpose affording a slight rocker movement toitheV table, if desired. i Y

564` represents an operatingflhandle which is pivot-edlymounted` at"57 tothei'upperAv endportion ofthe arm 33. rPhisI-"operatinghandle is thus v adapted to;` move theA pedestal and table horizontally,- andnbeing pivoted` is adapted to permit itsffree outer end to A link 58 connects the intermediate portion' of this `arm with a bracket 59 that is also pivotably connected` as atOV to a hub formed on the arm 33; Said-2 bracket further includes dependingarms-4 61 which normally rest againstftheface-jof the flanges 47 before mentioned; The-purpose vof this interlocking connectio-njis to'- normally support the pedestalA 34, itsg arm 33, Vand the op`ei``ating handlef' in aV ijxed position withrelation -to' the member' to permit definite Vand uniformmanipula-"- ticns of the table, and to allow'slight independent rocker movement ofthe pedestal34 in cradle 35 should occasion require.A

I have mounted a dust sliield'Qon the bed 10 beneath the grindingiwheels, to-cover'v the roll 42jwhen in a forward anjdengaged position. employed to cover the grinding wheels if @ther shieldsmay obviously 'be desired; asis customary in grinding machines of this class.

Havingthus vdescribedmy invention, what I claim and desire to secure by Letters Patent is:

1. A machine for squar-ing the tangs of knife blades, comprising a series of grinding, wheels, the operating faces of two of which are arranged inopposite relation to eachV other, a movable knife blade supporting; table adapted' to be moved' as` againstY the operative face of@ one of the wheels, and then in an: opposite direction against the operative face ofthe other of! said' wheelsto grind the opposite edges of the tang of a blade with one setting of the 'blade upon the table, and' to bemovedf angularly to said movementbetween the wheel's'tol grind a portion-ofthe` tangfagainst the side'offonej of saidn wheels;

Q machineufor."squaringf the tangs of knifeblad'es, comprisin'gfa series o f grind'-V ing: wheels, thecutting faces ofltwo-jof which' are arranged opposite to each' other, and

the `cutting face offthe third ofwhi'ch is-positioned at substantially a right angle to the first` mentioned faces, means for;l independently adjusting the-'position of the wheels with relation to eachother, aknife blade supportingtable adaptedto be moved to andfrom each of the said wheels for separate independent operations upon the tang, andi to be moved' angul'arly to said movement between the wheels-,togrind aV portion of the tang against the side of one of said wheels;

3. In a machine for grinding the tangs ofA knife blades, comprising a seriesA of grinding wheels, the" operative faces of' which are arranged adjacent toveach other, a knifefbrlad'e supporting table arranged in operative relation to the grinding faces of said-| wheels, means for providing a universal horizontalv4 movement of the table to per- Vmit` the blade when supported thereon to be moved into "engagement with the opera-tive faces of `eachof the several grindingwheels in aA manner to` square the edges of the tang;

4. "A machine for squaring the tangs of Vknife blades, comprising a series of grinding wheels, the operating faces of two of ywhich are4 arranged' in opposite relation to each other, the operating face of a third wheel being arranged intermediate of and at a right angle to that of the first inentionedv wheels, a movable` knife blade supporting 4table adaptedto be moved as against thegrinding facel of one ofthe wheels for grinding one edge of the tang and then movedl against the second wheel' for grindllU ing-another edgeV o f the tang by a continuous" horizontalmovement of' the work table and with one setting of the blade thereon, said table adapted to be moved away from said second Wheel angularly to said movement bet-Ween the Wheels.

5. A machine for squaring the tangs of knife blades, comprising a bed, a series of grinding Wheels mounted upon the; bed, a movable table adapted to support and guide a knife blade into engagement with the operative faces of the grinding Wheels, a pedestal vupon Which the table is mounted, and guiding means carried by theJ table for engagement of t-he table carrying pedestal whereby the edges of the blade to be ground are properly fed to the grinding Wheels.

6. A machine for squaring the tangs of knife blades, comprising a bed having an opening therein, a series of Wheels mounted upon the bed, a pedestal hingedly supported on the bed and disposed through said opening, means for guiding the engagement of the pedestal with the edges of the opening, ,a knife blade supporting table carried upon the pedestal for carrying the knife blade to the respective grinding Wheels to be operated upon.

7. A machine for squaring the tangs of knifeblades, comprising a bed having an opening therethrough, a series of grinding Wheels mounted upon the bed and having their grinding edges positioned adjacent to each other, and above the opening in the bed, a hanger secured to the underside of the bed, a pedestal pivotally mounted in the hanger, guiding means upon the bed to be engaged by and to guide the pedestal with relation to the operating faces of the Wheels, a knife blade supporting table mounted upon the pedestal and adapted to support and carry a knife blade against the several edges of the grinding Wheels.

8. In a machine for grinding the tangs' of knife blades, the combination with a bed having an opening therein, a series of grindsitioned with relation to the opening, a hanger secured to the under side of the bed, a cradle svvivelly supported in the hanger, a pedestal carried by the cradle adapted to engage and be guided by the edges of the opening in the bed, and a knife blade supporting table mounted upon the pedestaland adapted to carry the blades to the several grinding Wheels.

9. In a machine for grinding the tangs of knife blades, the combination With a bed, of a series of grinding Wheels mounted thereon, a knife blade supporting table, a swiveled pedestal upon which the table is mounted, a swinging cradle in which the pedestal is sWiveled, means for adjusting the movement of the pedestal relative toY the cradle, and means for limiting the guided movements of the pedestal and its table with relation to grinding edges of the Wheels.

ing Wheels mounted upon the bed and poporting table carried by the pedestal and adapted to be moved toward and from the operative periphery of said Wheel to grind the edge of the tang of a blade positioned upon the table, means for adjusting the pedestal and its table to Vvary the angle of the cut upon the tang.

12. In a machine for squaring the tangs of knife blades, the combination of a series of grinding Wheels having beveled peripheries, a swinging pedestal, a knife blade supporting tablercarried by the pedestal and adapted to be moved toward and from each of the grinding Wheels, means for limitingv the feeding movement of the pedestal and its table to insure uniform cutting operations on the tang, and means for holding a knife blade upon the table With its tang free to be operatedv upon.V

13. In a machine' for grinding the tangs of knife blades, the combination With a series of grinding Wheels, of l aV pedestal thereon having universal swinging` movement, a table mounted thereon and arranged adjacent to said Wheels, means for positioning a knife blade upon the table, and devices to guide the travel of the pedestal in a Way to successively feed the tang of the knife blade against each of the said Wheels for grinding the several edges of the tang.

14. In a machine for squaring the tangs of knife blades, the combination of a series of grinding Wheels, of a knife blade supporting table for holding a knife blade in a manner to permit operations upon its tang, means for affording said table universal-horizontal movement to bring the several edges of the tang into engagement With the operative faces .of the respective grinding Wheels.

15. In a machine for squaring the tangs of knife blades, the combination With a bed, of a series of three grinding Wheels, ameans for adjusting the position of each of the Wheels with relation to the other two Wheels so as to position their cutting edges close to or far from each other, a movable knife blade supporting table mounted to be moved so that the blade carried thereby Will vbe engaged by each of the three grindingvvheels, a swinging cradle member supported beneath the table, a pedestal carried by the cradle and upon Which the tab-le is supported, a handle for directing the movement of the pedestal and table, and means for operating the pedestal and table separately or together or independent of each other.

16. In a grinding machine of the class described, the combination With a series of three grinding Wheels, positioned adjacent to each other, a universally movable blade carrying'table adapted to be moved forward by a continuous movement of the table to the operating faces of said Wheels, to insure the grinding of the three edges of the tang by said continued movement of the table.

17. In a grinding machine for squaring tangs of knife blades, the combination of a bed, three grinding Wheels mounted thereon, a knife blade supporting table being supported upon the pedestal, means for guiding the feeding movement of the pedestal in relation to the cutting edges of the grinding Wheels, and means for limiting the out- Ward movement or rested position of the pedestal and table When not in use.

18. ln a knife bla-de grinding machine, the combination of a bed, a series of three grinding Wheels, a handle secured to the bed, a hanger secured to said bed, a yoke pivotally supported in the hanger, a cradle pivotally supported in the yoke, a pedestal mounted for rotary movement in the cradle, means for limiting the amount of said movement, a knife blade table mounted upon the pedestal and adapted to move therewith in operative relation to the grinding Wheels to insure a grinding operation upon each of the three ed es of the knife blade tang.

igned at Bridgeport, in the county of Fairfield and State of Connecticut, this 18th day of January, A. D. 1923.

EDWARD J. CONKLIN. Witnesses:

C. M. NEWMAN, ELBERT O. HULL. 

